Crawling, swimming, embracing, squeezing, camouflaging... running? Why would an agile octopus, like the algae octopus or the coconut octopus, choose to use two of their eight arms to stand up and "run" backwards? Mont...

From the Melbourne Zoo, this is Obi, a three week old baby Pygmy Hippo who is coming out for a swim in the zoo's "big pool" for the first time. Obi's mum Petre is close by to keep the baby well-guided and safe.
In...

If seeing dogs move in slow motion is fun, then seeing dogs move in slow mo underwater is even better. Plus, these adorable canines are benefiting from the exercise of swimming in the pool. In this episode of Earth Un...

We've seen a video of penguins rocketing out of the water as if powered by jets, but we've never seen it happen from underwater... until now. In this National Geographic clip, photographer Paul Nicklen captures how th...

Whale sharks are gentle giants (much like the basking shark), and in this Earth Touch video, we get to see one up close as a cameraman narrates his surprise swim with the planet's biggest fish. How big? Whale sharks a...

When you attach a camera onto the back of a giant South American river turtle, you get to witness how they live, where they go, how they interact with their young and others turtles. National Geographic shares this cr...

Funani, an experienced hippopotamus mother, birthed her 11th calf at the San Diego Zoo on March 23rd at 6:30 a.m. Though zoo officials do not know yet if it's a boy or a girl, they've announced that both the brand new...

Travel to Isla Plaza Sur in the Galápagos Islands, 600 miles off the coast of Ecuador, where the Galápagos Sea Lions play, swim, eat sardines, and sun bathe. This video was filmed underwater and in the air by Florian ...

The Scaredy Swan, an Acme Filmworks-produced animated short by Burcu Sankur and Geoffrey Godet, tells the story of a swan that's afraid to get into the water, and the "help" a bee gives him in joining his six friends ...

Follow marine biologist Dr. Ingrid Visser and the wild orca that she researches and advocates for in this episode of HERO4: The Adventure of Life in 4K resolution: Orca Rescue in 4K.
Filmed on location in New Zeal...

Six hundred meters down in Monterey Submarine Canyon, off the coast of California, a ROV from the Monterey Bay Aquarium Research Institute captured this incredibly rare video footage of a 9 cm long, female Deep-Sea An...

Underweight and alone, an orphaned five-week-old southern sea otter pup was found on Coastways Beach in California, and was rushed to the Monterey Bay Aquarium for care and rehabilitation. Four weeks later, 'Pup 681' ...

When sea turtle hatchlings emerge from their sand-covered eggs and scurry quickly toward the ocean, we know that, if they're lucky enough to avoid predators, they're helped forward on their journeys by the ocean curre...

Travel down to Aquarius Reef Base, the only underwater research lab on the sea floor, with Mission 31 aquanaut and scientist Liz Bentley Magee. In this NOVA PBS video, she explains what it's like to live in this incre...

Follow a group of four polar bears as they swim in search of ice. Arctic Bear Productions filmmaker Adam Ravetch captured this footage by attaching a camera to one of the four animals. The big paws, the sun on the hor...

Tens of thousands of mobula rays come together off the coast of Baja California in a brilliant display of their massive numbers underwater. Then watch them breach for reasons unknown. The leaps out of the water are sp...

This is a feather star swimming off the coast of Japan. Feather stars are crinoids or crinoidea, meaning "Lily-like" in Greek, and thrive in the Indian Ocean up to Japan, as well as in the Atlantic. From Wild Singapor...